Dental casting-machine.



M. MAIER. DENTAL CASTING MACHINE. APPLIoATroN FILED Nov. v

m9111911 sept. 15, 1914.

NORTON MAIER, vOIi NEW YORK,`N. Y.

DENTAL CASTING-Macallan.

idioma.

Specication of Letters Patent.

Patented Sept.. 15., 19141..

Application mea November?, isis! serial No. 799,691.

To all whom if may concern Be it known that I, MoR'roN MAIER, a citizenof the United States, and a resident of New York, borough of Manhattan,in the county and State of New .'York, have invented a new and ImprovedDental Casting- Machine, of which the following isa full, clear, andexact description.

My invention relates to dental casting machines, and has reference moreparticularly to the centrifugal type in which the molten material isforced into the mold by centrifugal force.

The object thereof is to provide a simple, inexpensive and convenientdevice whereby a. perfect casting canibe obtained.

1 obtain the above object by providing a bucket adapted to receive amold carrier and normally suspended in a vertical plane from asubstantially horizontal arm provided with means whereby it can berotated in a substantially horizontal plane, the centrifugal forcegenerated by rotation tending to force the bucket from its normalvertical plane to a horizontal plane and whereby the molten metal inthevmold carrier is forced into the shape of the mold.

The invention consists' of the construction and combination of parts tobe more fully described hereinafter and fully set forth in the claim;

Reference is to be had to the accompanying drawings forming a part ofthis specification, in 'which like charactersI indicatel correspondingparts in all the views, and

. in which:

Figure, 1 is a vertical, longitudinal section of an embodiment of myinvention; and Fig. 2 a section on line 2-2, Fig. 1.

' Referring tothe drawings, 3 represents a bucket of any suitablematerial provided interiorly with reinforcing ribs 4, forming spacerstherein fora mold carrier 5, preferably formed of a piece oftube, toreceive therein the material 6 formingf the mold proper. Two of theopposite ribs f1 are eX- tended/laterally, as shown at 7 with theirextremities turned into a'plane parallel to the axis of the bucket. f byany suitable y of the extensions erably provided with a rigidly securedcentral head 9 having a linkll.

Pivotally` secured meahs to the yextremities 7 is a bail 8, which ispref- An arm 11 having a snap hook 12 at one 4 end, which is vadapted toreceivethe link 10 ot the bail, has its opposite end rigidly cured to asubstantially vertical shaft 13. The said shaft 13 bears in an extension14 of a casing 15. The portion of the shaft 13 within the casing 15 isprovided with a pinion 16 secured rigidly. onrsaid shaft and meshingwith a gear 17 also positioned in the casing 15 and carried by a shaft18 bearing in the cover 19 of the casing 15 and l")rojecting throughsaid cover. '1`he pro- ]ecting end of the shaft 18 is engaged by acrank20 whereby said shaft can be rotated and therewith shaft 18, gear17 secured to said shaft, pinion 16 meshing with said gear, shaft 13rigid with the pinion and the arm 11 carried by saidshaft 13, andtherewith the bucket 3. The casing 15 is prefer ably mounted on a bar21, whereby the said casing can be secured to any suitable place. Saidbar 21 also formsa journal for the lower end of the shaft 18, so as toform a better support for the gear 17. A counterweight 24 -is secured tothe shaft 13 whereby the revolving parts are balanced. The arm 11, asshown in Fig. 1, is bent slightly downward so as to permit the bail j Sto pass freely under the bar 21 when the The reason for this is topermit the bucket' which supports the mold carrier to remain in asubstantially vertical position .independent of the bail. has a tendencyto remain iny a substantially vertical position not only on the snaphook rIhat is, the bucket' liti@ 12 but also on the axis of itssuspension on the bail. bilitynof This provision reduces thepossisplashing molten metal out of the funnel portion 22 formed-in thematerial 6 of the mold proper wherein the molten material is pouredbefore the device is 'set in rotation. ."And, as it can :be seen, aslong as the device does not acquire'its maximum speed, the bucket willremain substantially vertical, or will be inclined very little, and

with the increase in speed the said bucket will be moved to a horizontalplane, or substantially so, and the metalin the funnel narne to thisspecification stantially horizontal arm secured to said shaft;andmeansatA the free end Vof said arm adapted to secure said bail butleaving,

to it the freedom to swing on said arm, said bail being so positioned onsaid arm that the swinging axis of saidv bucket isvsubstantiallyperpendicular to the axis of said shaft. y

lIn testimony whereof I have. signed my Witnesses.

of two subscribing 4 MORTON'MAIER. l/Vitnesses:

BENEDICT JOFFE,

PHILIP D. 'RoLLIIAUs in the presencey

